Geranium zonal (Pelargonium x hortorum)

Publié mercredi 16 janvier 2013 Commenter 47
geranium zonal

Sommaire

Geranium zonal : en bref

Nom scientifique
Pelargonium x hortorum
Provenance / Origine
Afrique du Sud
Période de semi
Début février
Période de floraison
Mai à octobre
Couleur de floraison
Rouge, rose, blanc, mauve. Unicolore ou bicolore.
Température
Protéger du gel
Exposition à la lumière
Plein soleil
Reproduction
Bouturage
Hauteur
Jusqu'à 50 cm environ
Acidité du sol
Neutre
Entretien
Arrosage suffisant. Etêtage des fleurs fanées.
Type biologique
Pluriannuelle
Maladies
Alternariose. Rouille.
Type de feuillage
Caduc
Insectes et animaux ravageurs
Pucerons

Classification de la plante

Règne
Plantae
Sous-règne
Tracheobionta
Division
Magnoliophyta
Classe
Magnoliopsida
Sous-classe
Rosidae
Ordre
Geraniales
Famille
Geraniaceae

Une fleur cultivée de longue date

 

Le Géranium a été importé en Europe à la fin du XVIème siècle, et il est rapidement devenu très apprécié dans les serres et les jardins. La parfumerie aussi s'y est intéressé, car leur feuillage libère des huiles aromatiques en petites quantités, très odorantes. Leur senteur serait un mélange de citrus et de menthe, avec parfois une note de rose. Et vous, que sentez-vous dans vos Géraniums?

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Veillez à ce que la terre soit toujours humide, tout en ayant une capacité de drainage suffisante, sans quoi vous favoriseriez l'apparition de maladies. Retirez les fleurs juste après leur épanouissement afin d'entretenir la floraison. Apportez de l'engrais régulièrement sous forme liquide pendant la floraison, toutes les deux semaines, ou en une fois sous forme solide lors de la plantation.

Un semis classique

Il est plus simple de se procurer de jeunes plants en godets au printemps, mais vous pouvez tenter le semis, très productif. Opérez dans un endroit chauffé et bien lumineux, sous serre ou chez vous. La température doit être d'au moins 20°C. Lorsque les jeunes pousses ont deux ou trois feuilles, repiquez-les toujours dans la même pièce. En mai, une fois les derniers risques de gelées passés, vous pouvez les planter à l'emplacement définitif. Si c'est une variété à feuilles panachées de blanc, elle s'épanouira mieux un peu à l'ombre et à l'abri des pluies trop violentes.

 

Hivernage

 

Il est possible de conserver les pieds d'une année sur l'autre. Faites les hiverner à l'abri du gel en laissant la motte sèche. Au printemps, vous trouverez qu'ils ont bien mauvaise mine, mais ils devraient reprendre du poil de la bête rapidement. Coupez les parties sèches et placez-les au soleil en reprenant un arrosage régulier.

 

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